please help, idk how to solve this question at all, please solve all parts. thank you

Design MatLAB functions to: 1. enter length of a statically determined beam and positions of the pinned support and the roller support. The process must be user-friendly, with step-by-step instructions and appropriate control of the entered data. [3 marks] 2. enter the magnitude and the position of the loading factors lateral to the beam axis, including point loads, moments and uniformly distributed loads. The number of the loading factors of the each kind must be defined by a user interactively. The input data control must be implemented. [6 marks] 3. calculate reaction forces [5 marks] 4. construct the Bending Moment and Shearing Force Diagrams for the beam directly underneath the Free Body Diagram. [10 marks] 5. enter the type and the dimensions of the cross section of the beam and calculate the position of the centroid (Neutral Axis normal to the load) and the Second Moment of Area (Moment of Inertia) with respect to the Neutral Axis. [3 marks] 6. calculate internal stresses for maximum and minimum bending moments and plot their distribution on the cross section.